persistent pollutant
TRANSCRIPT
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By Bethany Bella Fiery columns of smoke and
ames are remnants of a memory
that I carry from the BP Gulf of
Mexico oil spill back in 2010. I
remember the devastation, the
incredible loss of aquatic biodi-
versity, the insurmountable gal-
lons of oil leaking unto beaches,
cloaking itself in seagulls, sea
otters, dolphins, and more. Its
hard to forget Americas most
infamous oil spill in history when
youre an environmental advo-
cate.
While this 87-day oil leak-
age from the Deepwater Horizon
oil rig is one of the most jarring
environmental tragedies that has
occurred within the past decade,
another highly-catastrophic oil
spill and its repercussions are still
surfacing some 25 years later
theExxon Valdez oil spill.
Alaskas Prince William
Sound was blanketed with almost
11 million gallons of crude oil on
March 24, 1989. Countless num-
bers of sea creatures drowned in
waters thick with crude thou-
sands of otters perished, hundreds
of thousands of birds were killed,
while almost 1,200 miles of
shoreline were splattered with the
spills belching excess. It was a
dark day for environmental stew-
ards across the globe.
As the quarter-century anni-
versary dawns this spring, chemi-
cal analysts are again investigat-
ing the once-pristine oceanic
habitat. Their ndings are quite
alarming: oil has retained a
persistent presence in the Sound
surroundings, clinging to rocks
and boulders along the Alaskan
coast for over 20 years. Surpris-
ingly still, the oil contains almost
the same chemical compounds
as oil sampled 11 days after theinitial spill.
Even after Exxon invested
billions of dollars into Valdez
cleanup, why are we still nd-
ing this resource oating in the
Alaskan shores of Kenai Fjords
and Katmai National Parks and
Preserves? Why has this par-
ticular toxin pervaded all of our
eradicating efforts?
According to Gail Irvine, amarine ecologist with the U.S.
Geological Survey and lead
researcher of the Gulf of Alaska
study, when the oil rst spilled
from the tanker, it encountered
seawater and formed a sludge-
like mixture. This oil-soup has
unique chemical qualities that
allow it to resist degradation.
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When oil forms into the
foam, the outside is weather-
ing, but the inside isnt. Its
like mayonnaise left out on
the counter. The surface will
crust over, but the inside of the
clump still looks like mayon-
naise, Irvine said.
This emulsion, with aid
from crashing waves, coated
rocks and boulders along the
Prince William Sound after
torrents of oil were depositedinto the Gulf. Because the
boulders on the beaches dont
move great amounts each year
(less than 3.3 feet in 18 years),
that stability is
what has allowed
the oil to persist,
Irvine adds. Even
after the coast was
steam-cleaned,
the oil managed to
evade all additional
forms of cleanup,
including cleanup
in recent years, with upgraded
technologies and methods.
The oil is continuing to
leak out into the ocean from
its boulder-shrouded conne,
although marine biologists
arent too concerned yet.
Irvine and colleagues collected
mussels near the boulder elds,
testing them for oil contamina-
tion. The analysts discovered
low levels ofExxon Valdezoil
in their tissues, although Irvinesaid, The levels are so low
that it probably isnt a cause
for concern for the animals.
But its still there, still pollut-
ing an ecosystem after years
of dedicated oil-obliterating
schemes.
Irvine and her fellow re-searchers are aiming to make
the public aware that freshly-
spilled oil has the potential
to linger in the environment
long after man has deemed it
clean. I can only imagine the
onslaught of terrors that the
BP oil is continuing to wreak
on our oceans how long is
this slippery substance goingto remain encased in oceanic
habitats, or will it ever dete-
riorate? Have we dumped too
much into our big-blue drain to
ush out all the pollutants?
I sincerely hope this bleak
surmise is not one of prophecy,
merely one of ctional, dys-
topian America. If those who
are environmentally passionate
act now in preventing futureoil spills form devastating sea
waters, we can save our oceans
for millions of years to come.
Alaskan waters shortly after
theExxon Valdezoil spill,
1989.
Marine animals
coated in the oil
-Exxonaftermath.